Malicious PDF — malware analysis report

Static analysis result for SHA-256 845182fef11af2e3…

MALICIOUS

PDF

76.6 KB Created: 2021-03-23 03:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81d45feb4cabb505aab4f8a7393e2d1b SHA-1: 204c1dc64843ab1a5d56f467d5b3fc34e99dcf6b SHA-256: 845182fef11af2e3791cbb525133144ca24d060190f59a745c7b7cc4ab24a041
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, suggesting it is designed to redirect users to malicious sites, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure of a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=whirlpool+gold+series+oven+manual+cleaning
    • https://cdn-cms.f-static.net/uploads/4459175/normal_60410d5848574.pdf
    • https://cdn.sqhk.co/varipivokil/fEujbgg/iron_man_granny_2.pdf
    • http://simopuvoramawu.mywebcommunity.org/hp_laserjet_1100_printer.pdf
    • http://neyroskakalka.site/14167844422ygb7m.pdf
    • https://cdn.sqhk.co/tunixomaj/hbhehgL/gukulesalutuzowadibuw.pdf
    • http://goodshopsales.xyz/nixezowozekawaxixasic89ii.pdf
    • http://oficialshoes.site/blacks_law_dictionary_1st_edition_download81fru.pdf
    • http://pefiworawodud.mypressonline.com/1089858822.pdf
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdf
    • http://reduslim-eu.site/piwigop5dpo.pdf
    • https://cdn.sqhk.co/tajiwikiter/jhgcolk/latest_hollywood_action_movies_2018_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4389370/normal_60405cd04f9bd.pdf
    • https://cdn.sqhk.co/folamudoj/gpijZum/ouvir_musicas_dos_anos_80_90_e_2000.pdf
    • https://static.s123-cdn-static.com/uploads/4374369/normal_600897ad84ff0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0437402d-7690-4434-bfa0-6bd6883973bb/12546547306.pdf
    • https://uploads.strikinglycdn.com/files/f2460624-35e3-4cb5-ae92-644f8f7ce0c9/washington_dc_hotels_with_indoor_pools_and_free_parking.pdf
    • https://uploads.strikinglycdn.com/files/025b106d-85a5-4d28-aafe-edf5be50b8ca/devijafopoduxelevad.pdf
    • https://uploads.strikinglycdn.com/files/0fb5cbf3-12b3-46b2-8734-77d1387cfa64/diagrama_de_equilibrio_de_fases_ternario.pdf
    • https://uploads.strikinglycdn.com/files/792481b5-e475-43c6-97c7-d9fb0eb58c21/53814553657.pdf
    • https://uploads.strikinglycdn.com/files/a6520e22-edf4-458a-a64f-761231b49bd3/common_and_proper_noun_worksheet_grade_2.pdf
    • https://uploads.strikinglycdn.com/files/2f4f752d-5655-4bbb-983c-f223e6147890/40656250922.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb3c.bin
cc7cdf448a2d42a2dbe5103515c9bf8c892d8906c013acdfe576b6433f8fdac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3C 5560 bytes
font_01_sfnt_off0000fe0c.bin
7c229f2b0e25b756be3252dea2029a1d490c14532a870458a7499d7e4c8c2941		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0C 11336 bytes

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